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Aftic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 5th Edition <br />(2014) Residential R8W. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />the space to be ventlated.Upper ventilators shall be located no more than 3 feet <br />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by eave or comice vents. <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLM- <br />(Values to be verified with Manufacturer Specifications) <br />VENTED SOFFIT 48 SQ. FT. * RIDGE VENTS 15 SQ. IN. OF NET FREE AREA / LINEAR FT. <br />e OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />* SOFFIT VENTS 7 SO. IN. OF NET FREE AREA / SQ. FT. <br />..... ...... <br />.................................... ............. .......................... .. e O'HAGIN WEATHERMASTER (Shingle Roof) - 72 SO. IN. OF NET FREE AREA/ FT. <br />(Sq. Ft SoM Needed) x 7 = (Sq. In. Needed) 172 = AmourA of O'Hagin Vents Needed <br />LOMANCO DECK -AIR (Shingle Roof) - 9 SO. IN. OF NET FREE AREA/ FT. <br />-Formula: (Sq. Ft. Soft Needed) x 7 - (Sq. In. Needed) / 9 = (Linear Ft of Dock -Air Needed) <br />ZONE-3 * O'HAGIN (Ille Roof) - 86.25 SO. IN. OF NET FREE AREA / VENT <br />"Formula: (Sq. Ft Soffit Needed) x 7 (Sq. In. Needed) 86.25 Amount of O'Hagin Venb; Needed <br />.71 <br />ATTIC SPACE <br />tz 280 SQ. FT. <br />Cn... ........................ <br />........ ....... <br />..................................................................... ................................... .................... <br />00 ......................... *,k .......................................................... ......................... <br />. .. .......................... <br />U- <br />VENTED SOFFIT 42 SQ. FT. <br />LU <br />ZONE-4 <br />ATTIC SPACE <br />1740 SQ. FT. <br />Cn <br />U- *.7. <br />U- <br />0 <br />Cn <br />LU <br />Cf <br />o o Cn <br />LU <br />o. o .... o ............ <br />............ o <br />...... ................ <br />d <br />co <br />ATTIC VENTILATION CALCULATIONS - B <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIMD <br />U- <br />0 <br />VENTED SOFFIT 26 FT. U) 1 /150 Rule 1/300 Rule Ridp Vent Amt <br />(No Upper Ventilators (Must Provide Upper Ventilators) (FL) Off-Rklge Amt. <br />n Req.) <br />LLJ <br />rm "M "I% rm "I% "M "M ..... o ....... <br />. . . . . . . . . . . . . . . . . o . . . . . . . . . . . . . . . . . . . . . . . 4- .7.74 Total Vardatioll <br />.......... I . ....... o ... o =.1.7 :o ftwed by <br />ATTIC Uppw <br />SPACE SQ. FT. Total SQ. SQ, FT. SQ. IN. of verldlaw <br />ZONE-1 ... SQ. IN. of of ventilation to <br />... ventilation of vented IN. of vented be provided 5U. IN. Of SO. IN. of (Sea Elev) <br />ZONE-2 4 Soffit ventilation Ventilation verlulation <br />o required needed required Soffit by upper <br />needed ventilators <br />ATTIC SPACE <br />ATTIC SPACE <br />269 SQ. FT, Main 0.0 0.0 <br />45 SQ. FT. Cf) Floor 269 258 37 129 9 65 0.0 <br />.. .............. o .......... <br />o ..................... .. (Zone 1) 0.0 0.0 <br />0.0 0.0 <br />Main Roor 0.0 <br />45 43 6 22 2 11 <br />VENTED SOFFIT 15 SQ. FT. LL- (Zorte 2) 0.0 0.0 <br />0 <br />U3 <br />Upper Floor 280 269 38 134 10 67 0.0 0.0 0.0 <br />(brie 3) <br />o .1. .... ... LLJ 0.0 0.0 <br />0.0 3.0 <br />LLJ Upper Floor <br />.................................. 1740 1670 239 835 10 411 414.0 <br />0.0 41:4:0�:] <br />7.7 <br />**NOTE*' <br />. ............................... o ............. oo ............................................................ o ......... .. GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />............................................................................................. <br />----------------- REQUIRED BY FBC 5th ED. RESIDENTIAL. <br />VENTED SOFFIT 70 SQ. FT. VENTED SOFFIT LEGEND <br />F7/ IF SOFFIT IS LABELED AS "NON -VENTING" FIRE PROTECTION WILL BE INSTALLED <br />/77 AS REQUIRED BY SECTION R302 OF THE FBC 5th EDITION (2014) RESIDENTIAL. IF <br />LABELED AS"VENTED", NO FIRE PROTECTION WILL BE REQUIRED. <br />VENTED SOFFIT <br />ROOF PLAN-B_ <br />SCALE: Y4"=1'-0" <br />I <br />z <br />z <br />z <br />V) 0 <br />4--J LU <br />U <br />0 LU E <br />0 <br />C0 M <br />C 'am <br />E LV -0 co <br />8 0 *r_ N <br />.9 C, <br />LL <br />LO CL <br />0 <br />N,C,B,D,C <br />A I IV <br />RD. <br />cc <br />rig <br />L <br />U� <br />MW 41r' '=,4 <br />f9N - <br />K, <br />LL111A 7jl�pmj. <br />,4Z <br />0 F r- <br />To the best of the Engineer's information, and <br />belief, the structural plans and specifications contained <br />within these drawings comply with the Florida Building <br />Code Sth Edition (2014) Residential. Engineer's signature <br />and seal is only for the structural engineering portions of <br />the drawing pages bearing Engineer's signature and seal. <br />c) <br />z <br />0 <br />P-4 CD <br />15 ko <br />V) rn <br />rn 0 <br />M Ln <br />0) 0 Ln <br />L- LL <br />CL <br />CL 00 <br />z z E <br />z <br />Uj IT <br />W <br />6z <br />L <br />z <br />0 0 <br />z >- <br />z < <br />Z <br />z <br />1�0 g�!Lu <br />-j <br />R9 81 <br />40 <br />i5 OR z 0 <br />Ln <br />r44 <br />r-4 <br />Ln <br />It <br />W <br />U <br />0 ro- z <br />Z Z91-:8re - <br />Z <br />00 0 <br />(2 z U, (UJ r- <br />LU <br />z <br />0 Z' <br />0 z rt <br />�j LU <br />LL <br />z 0 <br />Uj Z 0 <br />z 0 <br />SCALE AS NOTED <br />PLOT DATE 12/7/2012 <br />TECH: FGUZMAN <br />VERSION NO. <br />1525 <br />JOB NO: 17-4135 <br />SHEET NO. <br />7 <br />